Why does Carbide Create create an unwanted tool path?

The 45 degree line was not drawn in CAD, as you can see in the shapes above.

This 45 degree path will spoil my parts. I can always run the tool on the outside of the “L” shape, but I estimate I would be cutting air 50% of the time.

Rant 1 photo limit for noobs? Sort of silly, as we are the ones with the most questions!

Found my answer - Incomplete polylines :slight_smile: